Malicious PDF — malware analysis report

Static analysis result for SHA-256 875ef9c28e4bc489…

MALICIOUS

PDF

53.8 KB Created: 2020-10-03 10:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-04
MD5: d988eca921586c9bd93daa3224221fe9 SHA-1: 03e37ba1c3953ffc7d3b0687f5a1b4b31394a35e SHA-256: 875ef9c28e4bc489c3650fcf2113da9ed0c20f49497c57e650d023ab2b969a2b
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=catalogue+meyclub+2018 In PDF document text
    • http://files.technolytix.net/uploads/1/3/1/4/131453657/df60ae18a79.pdfIn PDF document text
    • http://files.sgfbeef.com/uploads/1/3/0/8/130814066/tadukik.pdfIn PDF document text
    • http://files.customscars.org/uploads/1/3/2/6/132681399/8278263.pdfIn PDF document text
    • http://files.ameliawilliamsmosaic.com/uploads/1/3/1/8/131856076/kukurizoxosidelazun.pdfIn PDF document text
    • http://nedasizu.seanwebsterillustration.com/uploads/1/3/1/3/131379591/zomopejamo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000091fc.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000091fc.bin)
    • https://uploads.strikinglycdn.com/files/cfca77d6-8a77-4fb3-95dc-dc446490e2ba/77518858431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d883fd7c-3a48-4d5b-b205-902c5c0bbc74/91095080068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96206d3e-8f3d-4b69-a9ab-cb4c44fa4360/venifukotuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0e54b89-5d24-41ac-9e1d-9f8422554927/bevanaworepisawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3099ca0-e921-4012-afa4-2b86df2e1a42/40087771559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e3e7ec-9615-4777-b83c-2d818e7f8f9b/8681930099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3050/5628/files/actfl_can_do_statements_novice_low.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7968/3234/files/script_hook_v_download_gta_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8910/6846/files/unblocked_games_btd3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42c69fb-2e59-4797-9ad9-644a3180d9f0/36375993581.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000091fc.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FC 5512 bytes
SHA-256: 43e62d19c817285ec2ae71e4b64f5bb7e6b5cd9ba2655e893b40f24405f05249
font_01_sfnt_off0000a4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B9 11236 bytes
SHA-256: 304d02440f72fb1a6ec635b685f004ea1986bdc0c93f6c39dcc3e818f15ac8ab

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